--- /dev/null
+<?php
+/**
+ * Custom template tags for Twenty Fifteen
+ *
+ * Eventually, some of the functionality here could be replaced by core features.
+ *
+ * @package WordPress
+ * @subpackage Twenty_Fifteen
+ * @since Twenty Fifteen 1.0
+ */
+
+if ( ! function_exists( 'twentyfifteen_comment_nav' ) ) :
+/**
+ * Display navigation to next/previous comments when applicable.
+ *
+ * @since Twenty Fifteen 1.0
+ */
+function twentyfifteen_comment_nav() {
+ // Are there comments to navigate through?
+ if ( get_comment_pages_count() > 1 && get_option( 'page_comments' ) ) :
+ ?>
+ <nav class="navigation comment-navigation" role="navigation">
+ <h2 class="screen-reader-text"><?php _e( 'Comment navigation', 'twentyfifteen' ); ?></h2>
+ <div class="nav-links">
+ <?php
+ if ( $prev_link = get_previous_comments_link( __( 'Older Comments', 'twentyfifteen' ) ) ) :
+ printf( '<div class="nav-previous">%s</div>', $prev_link );
+ endif;
+
+ if ( $next_link = get_next_comments_link( __( 'Newer Comments', 'twentyfifteen' ) ) ) :
+ printf( '<div class="nav-next">%s</div>', $next_link );
+ endif;
+ ?>
+ </div><!-- .nav-links -->
+ </nav><!-- .comment-navigation -->
+ <?php
+ endif;
+}
+endif;
+
+if ( ! function_exists( 'twentyfifteen_entry_meta' ) ) :
+/**
+ * Prints HTML with meta information for the categories, tags.
+ *
+ * @since Twenty Fifteen 1.0
+ */
+function twentyfifteen_entry_meta() {
+ if ( is_sticky() && is_home() && ! is_paged() ) {
+ printf( '<span class="sticky-post">%s</span>', __( 'Featured', 'twentyfifteen' ) );
+ }
+
+ $format = get_post_format();
+ if ( current_theme_supports( 'post-formats', $format ) ) {
+ printf( '<span class="entry-format">%1$s<a href="%2$s">%3$s</a></span>',
+ sprintf( '<span class="screen-reader-text">%s </span>', _x( 'Format', 'Used before post format.', 'twentyfifteen' ) ),
+ esc_url( get_post_format_link( $format ) ),
+ get_post_format_string( $format )
+ );
+ }
+
+ if ( in_array( get_post_type(), array( 'post', 'attachment' ) ) ) {
+ $time_string = '<time class="entry-date published updated" datetime="%1$s">%2$s</time>';
+
+ if ( get_the_time( 'U' ) !== get_the_modified_time( 'U' ) ) {
+ $time_string = '<time class="entry-date published" datetime="%1$s">%2$s</time><time class="updated" datetime="%3$s">%4$s</time>';
+ }
+
+ $time_string = sprintf( $time_string,
+ esc_attr( get_the_date( 'c' ) ),
+ get_the_date(),
+ esc_attr( get_the_modified_date( 'c' ) ),
+ get_the_modified_date()
+ );
+
+ printf( '<span class="posted-on"><span class="screen-reader-text">%1$s </span><a href="%2$s" rel="bookmark">%3$s</a></span>',
+ _x( 'Posted on', 'Used before publish date.', 'twentyfifteen' ),
+ esc_url( get_permalink() ),
+ $time_string
+ );
+ }
+
+ if ( 'post' == get_post_type() ) {
+ if ( is_singular() || is_multi_author() ) {
+ printf( '<span class="byline"><span class="author vcard"><span class="screen-reader-text">%1$s </span><a class="url fn n" href="%2$s">%3$s</a></span></span>',
+ _x( 'Author', 'Used before post author name.', 'twentyfifteen' ),
+ esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ),
+ get_the_author()
+ );
+ }
+
+ $categories_list = get_the_category_list( _x( ', ', 'Used between list items, there is a space after the comma.', 'twentyfifteen' ) );
+ if ( $categories_list && twentyfifteen_categorized_blog() ) {
+ printf( '<span class="cat-links"><span class="screen-reader-text">%1$s </span>%2$s</span>',
+ _x( 'Categories', 'Used before category names.', 'twentyfifteen' ),
+ $categories_list
+ );
+ }
+
+ $tags_list = get_the_tag_list( '', _x( ', ', 'Used between list items, there is a space after the comma.', 'twentyfifteen' ) );
+ if ( $tags_list ) {
+ printf( '<span class="tags-links"><span class="screen-reader-text">%1$s </span>%2$s</span>',
+ _x( 'Tags', 'Used before tag names.', 'twentyfifteen' ),
+ $tags_list
+ );
+ }
+ }
+
+ if ( is_attachment() && wp_attachment_is_image() ) {
+ // Retrieve attachment metadata.
+ $metadata = wp_get_attachment_metadata();
+
+ printf( '<span class="full-size-link"><span class="screen-reader-text">%1$s </span><a href="%2$s">%3$s × %4$s</a></span>',
+ _x( 'Full size', 'Used before full size attachment link.', 'twentyfifteen' ),
+ esc_url( wp_get_attachment_url() ),
+ $metadata['width'],
+ $metadata['height']
+ );
+ }
+
+ if ( ! is_single() && ! post_password_required() && ( comments_open() || get_comments_number() ) ) {
+ echo '<span class="comments-link">';
+ comments_popup_link( __( 'Leave a comment', 'twentyfifteen' ), __( '1 Comment', 'twentyfifteen' ), __( '% Comments', 'twentyfifteen' ) );
+ echo '</span>';
+ }
+}
+endif;
+
+/**
+ * Determine whether blog/site has more than one category.
+ *
+ * @since Twenty Fifteen 1.0
+ *
+ * @return bool True of there is more than one category, false otherwise.
+ */
+function twentyfifteen_categorized_blog() {
+ if ( false === ( $all_the_cool_cats = get_transient( 'twentyfifteen_categories' ) ) ) {
+ // Create an array of all the categories that are attached to posts.
+ $all_the_cool_cats = get_categories( array(
+ 'fields' => 'ids',
+ 'hide_empty' => 1,
+
+ // We only need to know if there is more than one category.
+ 'number' => 2,
+ ) );
+
+ // Count the number of categories that are attached to the posts.
+ $all_the_cool_cats = count( $all_the_cool_cats );
+
+ set_transient( 'twentyfifteen_categories', $all_the_cool_cats );
+ }
+
+ if ( $all_the_cool_cats > 1 ) {
+ // This blog has more than 1 category so twentyfifteen_categorized_blog should return true.
+ return true;
+ } else {
+ // This blog has only 1 category so twentyfifteen_categorized_blog should return false.
+ return false;
+ }
+}
+
+/**
+ * Flush out the transients used in {@see twentyfifteen_categorized_blog()}.
+ *
+ * @since Twenty Fifteen 1.0
+ */
+function twentyfifteen_category_transient_flusher() {
+ // Like, beat it. Dig?
+ delete_transient( 'twentyfifteen_categories' );
+}
+add_action( 'edit_category', 'twentyfifteen_category_transient_flusher' );
+add_action( 'save_post', 'twentyfifteen_category_transient_flusher' );
+
+if ( ! function_exists( 'twentyfifteen_post_thumbnail' ) ) :
+/**
+ * Display an optional post thumbnail.
+ *
+ * Wraps the post thumbnail in an anchor element on index views, or a div
+ * element when on single views.
+ *
+ * @since Twenty Fifteen 1.0
+ */
+function twentyfifteen_post_thumbnail() {
+ if ( post_password_required() || is_attachment() || ! has_post_thumbnail() ) {
+ return;
+ }
+
+ if ( is_singular() ) :
+ ?>
+
+ <div class="post-thumbnail">
+ <?php the_post_thumbnail(); ?>
+ </div><!-- .post-thumbnail -->
+
+ <?php else : ?>
+
+ <a class="post-thumbnail" href="<?php the_permalink(); ?>" aria-hidden="true">
+ <?php
+ the_post_thumbnail( 'post-thumbnail', array( 'alt' => get_the_title() ) );
+ ?>
+ </a>
+
+ <?php endif; // End is_singular()
+}
+endif;
+
+if ( ! function_exists( 'twentyfifteen_get_link_url' ) ) :
+/**
+ * Return the post URL.
+ *
+ * Falls back to the post permalink if no URL is found in the post.
+ *
+ * @since Twenty Fifteen 1.0
+ *
+ * @see get_url_in_content()
+ *
+ * @return string The Link format URL.
+ */
+function twentyfifteen_get_link_url() {
+ $has_url = get_url_in_content( get_the_content() );
+
+ return $has_url ? $has_url : apply_filters( 'the_permalink', get_permalink() );
+}
+endif;
+
+if ( ! function_exists( 'twentyfifteen_excerpt_more' ) && ! is_admin() ) :
+/**
+ * Replaces "[...]" (appended to automatically generated excerpts) with ... and a 'Continue reading' link.
+ *
+ * @since Twenty Fifteen 1.0
+ *
+ * @return string 'Continue reading' link prepended with an ellipsis.
+ */
+function twentyfifteen_excerpt_more( $more ) {
+ $link = sprintf( '<a href="%1$s" class="more-link">%2$s</a>',
+ esc_url( get_permalink( get_the_ID() ) ),
+ /* translators: %s: Name of current post */
+ sprintf( __( 'Continue reading %s', 'twentyfifteen' ), '<span class="screen-reader-text">' . get_the_title( get_the_ID() ) . '</span>' )
+ );
+ return ' … ' . $link;
+}
+add_filter( 'excerpt_more', 'twentyfifteen_excerpt_more' );
+endif;
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